def roll(bot, trigger):
""".dice XdY[vZ][+N], rolls dice and reports the result.
X is the number of dice. Y is the number of faces in the dice. Z is the
number of lowest dice to be dropped from the result. N is the constant to
be applied to the end result.
"""
# This regexp is only allowed to have one captured group, because having
# more would alter the output of re.findall.
dice_regexp = r"\d*d\d+(?:v\d+)?"
# Get a list of all dice expressions, evaluate them and then replace the
# expressions in the original string with the results. Replacing is done
# using string formatting, so %-characters must be escaped.
if not trigger.group(2):
return bot.reply("No dice to roll.")
arg_str = trigger.group(2)
dice_expressions = re.findall(dice_regexp, arg_str)
arg_str = arg_str.replace("%", "%%")
arg_str = re.sub(dice_regexp, "%s", arg_str)
f = lambda dice_expr: _roll_dice(bot, dice_expr)
dice = list(map(f, dice_expressions))
if None in dice:
# Stop computing roll if there was a problem rolling dice.
return
def _get_eval_str(dice):
return "(%d)" % (dice.get_sum(), )
def _get_pretty_str(dice):
if dice.num <= 10:
return dice.get_simple_string()
elif dice.get_number_of_faces() <= 10:
return dice.get_compressed_string()
else:
return "(...)"
eval_str = arg_str % (tuple(map(_get_eval_str, dice)))
pretty_str = arg_str % (tuple(map(_get_pretty_str, dice)))
# Showing the actual error will hopefully give a better hint of what is
# wrong with the syntax than a generic error message.
try:
result = eval_equation(eval_str)
except Exception as e:
bot.reply("SyntaxError, eval(%s), %s" % (eval_str, e))
return
bot.reply("You roll %s: %s = %d" % (
trigger.group(2), pretty_str, result))
def c(bot, trigger):
"""Evaluate some calculation."""
if not trigger.group(2):
return bot.reply("Nothing to calculate.")
# Account for the silly non-Anglophones and their silly radix point.
eqn = trigger.group(2).replace(',', '.')
try:
result = eval_equation(eqn)
result = "{:.10g}".format(result)
except ZeroDivisionError:
result = "Division by zero is not supported in this universe."
except Exception as e:
result = "{error}: {msg}".format(error=type(e), msg=e)
bot.reply(result)
def c(bot, trigger):
"""Evaluate some calculation."""
if not trigger.group(2):
return bot.reply("Nothing to calculate.")
# Account for the silly non-Anglophones and their silly radix point.
eqn = trigger.group(2).replace(',', '.')
try:
result = eval_equation(eqn)
result = "{:.10g}".format(result)
except ZeroDivisionError:
result = "Division by zero is not supported in this universe."
except Exception as e:
result = "{error}: {msg}".format(error=type(e), msg=e)
bot.reply(result)